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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTZmNTQtM3FyOS1wamdq
Unauthenticated Access Via OAI-PMH
Impact
Media publication via OAI-PMH allows unauthenticated public access to all media and metadata by default. OAI-PMH is part of the default workflow and is activated by default, requiring active user intervention of users to protect media. This leads to users unknowingly handing out public access to events without their knowledge.
Patches
The problem has been addressed in Opencast 7.6 and 8.1 where the OAI-PMH endpoint is configured to require users with ROLE_ADMIN
by default. In addition to this, Opencast 9 removes the OAI-PMH publication from the default workflow, making the publication a conscious decision users have to make by updating their workflows.
Workarounds
In the organization security configuration (etc/security/mh_default_org.xml
), change the roles required for accessing /oaipmh
from ROLE_ANONYMOUS
to ROLE_ADMIN
.
References
For more information
If you have any questions or comments about this advisory:
- Open an issue in opencast/opencast
- For security-relevant information, email us at [email protected]
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTZmNTQtM3FyOS1wamdq
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 4 years ago
Updated: over 1 year ago
CVSS Score: 7.6
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Identifiers: GHSA-6f54-3qr9-pjgj, CVE-2020-5228
References:
- https://github.com/opencast/opencast/security/advisories/GHSA-6f54-3qr9-pjgj
- https://github.com/opencast/opencast/blob/1fb812c7810c78f09f29a7f455ff920417924307/etc/security/mh_default_org.xml#L271-L276
- https://nvd.nist.gov/vuln/detail/CVE-2020-5228
- https://github.com/advisories/GHSA-6f54-3qr9-pjgj
Blast Radius: 11.5
Affected Packages
maven:org.opencastproject:opencast-oaipmh-api
Dependent packages: 2Dependent repositories: 33
Downloads:
Affected Version Ranges: >= 8.0, < 8.1, < 7.6
Fixed in: 8.1, 7.6
All affected versions:
All unaffected versions: